Valve reseating tool



1936- B. M KENNA 2,059,383

' VALVE RESEATING TOOL Filed March 26, 1936 2 Sheets-Sheet l Inventor Far/n9 M A en 77 a M g Attorneys Nov. 3, 1936. B. McKENNA 2,059,383

VALVE RESEAT ING TOOL Filed March 26, 1936 2 Sheets-Sheet 2 Inventor Farne M Kenna By M Attomeys Patented Nov. 3, 1936 Meir 6 Claims.

This invention is a tool for reseating auto valves and the object of the invention is to provide a device of this character which may be used regardless of either the head size or stem 5 size of the valve, the tool to accommodate varying head stem sizes requiring but slight change which may be accomplished by a simple opera tion, thus rendering the device substantially a universal tool for all makes or models of automobiles.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure 1 is a vertical sectional view through the tool.

Figure 2 is a horizontal section taken on line 22 of Figure 1.

Figure 3 is a perspective view of the body member of the tool.

Figure 4 is a perspective view of a plate. Figure 5 is a perspective view of a block mernber.

Figure 6 is a sectional view through the block member showing the manner of securing an abrasive element thereto.

Referring to the drawings by reference numerals it will be seen that in the preferred embodiment thereof the tool comprises a body member having a substantially cylindrical top section 5 and a substantially frusto-conical bottom section 6. The aforementioned body is opened at both ends and extending through the upper and lower sections of the body are slots 1, the slots in the section 6 of the body being provided on opposite sides thereof with internal grooves 8 as best shown in Figure 3.

Slidably and detachably fitted Within the slots of the section 6 are blocks 9 provided on their respective opposite faces with grooves Ml so positioned relative to the grooves 8 that the outer or lower Walls of the grooves 8 fit within the slots I while the inner walls of the slots it] fit within the grooves 3 as best shown in Figure 2.

Extending from one end of the body members [0 at an angle to said body members are arms H which extend into the body section through the slots 1 in the cylindrical upper section of the body as shown.

At the lower end thereof the blocks 9 are provided with arcuate grooves I2 for hearing engagement, conformably, against a part of the valve stem l3 as shown in Figure 1.

From the description of the invention thus far it will be seen that the stem [3 of the valve l4 is passed downwardly through the body and through a substantially conical coil spring M arranged within the body and bearing at its lower end on the bottom of the body section 6.

The blocks 9 are moved inwardly and downwardly so that the faces I? thereof will positively engage the stem it of the valve holding the same rigid and thereby making the stem act as a guide.

Next, in assembling the device there is placed 1i) within the section 5 of the body a circular plate it which plate is provided with a central opening 86 to accommodate the valve stem [3, and at its peripheral edge with radially projecting lugs i? which are accommodated within the slots '5 15 in the body section 5 as shown. In final position within the body plate It rests on the arms ll as shown in Figure 1.

Next there is threaded on the body section 5 which is screw threaded as at H a cap IS.

The lower edge of the flange of cap I8 bears on the ends of the lugs ll projecting beyond the periphery of the body section 5 as shown in Figure 1, and obviously as the cap it is screwed home a downward pressure is exerted on the plate l5 and on the arms ll of the blocks 9 causing the latter to move inwardly into positive engagement with the stem is of the valve.

Projecting from the crown of the cap [8 is a suitable boss or shank is to which a suitable tool may be coupled for rotating the entire assembly to effect a grinding of the valve seat.

For grinding the valve seat there are secured within grooves 28 provided in the external faces of the blocks E! and through the medium of set screws 29 abrasive elements 22. The abrasive elements are in the form of oblong blocks rectangular in cross section and may be formed of soapstone or any other suitable abrasive substance. 40

From the above it will be seen that these abrasive elements 22 are held in such an angular position that the working faces thereon will so engage the inner edge of the valve seat for re surfacing said seat. 45

It is thought that from the following description a clear understanding of the construction, utility and advantages of a tool of this character will be had.

Having thus described the invention, what is 50 claimed as new is:

1. A valve reseating tool comprising a body having a substantially cylindrical upper section, externally threaded, and a substantially frustoconical bottom section, said body being provided 55 with a series of circumferentially spaced slots extending through both sections of the body, blocks having sliding fit within the portions of the slots in the lower section of the body, an arm extending from one end of each block at an angle thereto and inwardly of the body through the slot in the upper section of the body, said blocks having lower ends adapted to engage a valve stem extending axially into said body and means on said body engageable with said arms for urging the arms downwardly and toward one another into engagement with the valve stem.

2. A valve reseating tool comprising a body having a substantially cylindrical upper section, externally threaded, and a substantially frustoconical bottom section, said body being provided with a series of circumferentially spaced slots extending through both sections of the body, blocks having sliding fit within the portions of the slots in the lower section of the body, and arms extending from one end of the blocks at an angle thereto and inwardly of the body through the slots in the upper section of the body, said blocks having lower ends adapted to engage a valve stem extending axially into said body, a plate arranged within the upper section of the body and resting on said arms, and means threadedly engaged with the upper section of said body and having bearing engagement with said plate for urging the same and said blocks downwardly to engage the lower ends of the block with the valve stem.

3. A valve reseating tool comprising a body having a substantially cylindrical upper section, externally threaded, and a substantially frustoconical bottom section, said body being provided with a series of circumferentially spaced slots extending through both sections of the body, blocks having sliding fit within the portions of the slots in the lower section of the body, and arms extending from one end of the blocks at an angle thereto and inwardly of the body through the slots in the upper section of the body, said blocks having lower ends adapted to engage a valve stem extending axially into said body, a plate arranged within the upper section of the body and resting on said arms, a spring arranged in said body and having an end bearing on the bottom of said body and an upper end bearing against the under sides of said arms, and a member threadedly engaged with the upper section of said body and engaging said plate for normally urging the latter downwardly against the action of said spring.

4. A valve reseating tool comprising a body having a substantially cylindrical upper section, externally threaded, and a substantially frustoconical bottom section, said body being provided with a series of circumferentially spaced slots extending through both sections of the body, blocks having sliding fit within the portions of the slots in the lower section of the body, and arms extending from one end of the blocks at an angle thereto and inwardly of the body through the slots in the upper section of the body, said blocks having lower ends adapted to engage a valve stem extending axially into said body, a plate arranged within the upper section of the body and resting on said arms, a spring arranged in said body and having an end bearing on the bottom of said body and an upper end bearing against the under sides of said arms, and a cap screw threadedly engaged with the upper section of said body, and said plate having lugs extending outwardly through the slots in the upper section of the body and with which the lower edge of the cap is engaged; said cap being provided with means for engaging a tool therewith for rotating the entire device as a unit.

5. A valve reseating tool comprising a body having a substantially cylindrical upper section, externally threaded, and a substantially frustoconical bottom section, said body being provided with a series of circumferentially spaced slots extending through both sections of the body, blocks having sliding fit within the portions of the slots in the lower section of the body, and arms extending from one end of the blocks at an angle thereto and inwardly of the body through the slots in the upper section of the body, said blocks having lower ends adapted to engage a valve stem extending axially into said body, a plate arranged within the upper section of the body and resting on said arms, a spring arranged in said body and having an end bearing on the bottom of said body and an upper end bearing against the under sides of said arms, and a cap screw threadedly engaged with the upper section of said body, and said plate having lugs extending outwardly through the slots in the upper section of the body and with which the lower edge of the cap is engaged, and said blocks having abrasive elements extending longitudinally thereof and projecting from one face of the blocks.

6. A valve reseating tool comprising a body having a substantially cylindrical upper section,

blocks having sliding fit within the portions of the slots in the lower section of the body, and arms extending from one end of the blocks at an angle thereto and inwardly of the body through the slots in the upper section of the body, said blocks having lower ends adapted to engage a valve stem extending axially into said body, a plate arranged Within the upper section of the body and resting on said arms, a spring arranged in said body and having an end bearing on the bottom of said body and an upper end bearing against the under sides of said arms, and a cap screw threadedly engaged with the upper section of said body, and said plate having lugs extending outwardly through the slots in the upper section of the body and with which the lower edge of the cap is engaged, said blocks being each provided in one face thereof with a longitudinally extending groove, and an abrasive element for engagement with a valve seat detachably secured in said groove.

BARNEY MCKENNA. 

